8.12

src/main/java/com/teaching/backend/model/dto/chapter/ChapterDTO.java

@@ -67,7 +67,6 @@ public class ChapterDTO implements Serializable {
     @ApiModelProperty(value = "要求")
     private String requirement;
 
-
     @ApiModelProperty(value = "线上学时")
     private String onlineClassHours;
 

src/main/java/com/teaching/backend/model/dto/chapter/ChapterExcelDTO.java

@@ -0,0 +1,100 @@
+package com.teaching.backend.model.dto.chapter;
+
+import com.baomidou.mybatisplus.annotation.TableField;
+import com.fasterxml.jackson.annotation.JsonFormat;
+import io.swagger.annotations.ApiModelProperty;
+import lombok.AllArgsConstructor;
+import lombok.Data;
+import lombok.NoArgsConstructor;
+
+import java.io.Serializable;
+import java.time.LocalDateTime;
+
+/**
+ * ClassName: ChapterExcelDto
+ * Package: com.teaching.backend.model.dto.chapter
+ * Description:
+ *
+ * @Author 姜钧瀚
+ * @Create 2024/8/10 13:44
+ * @Version 1.0
+ */
+@Data
+@NoArgsConstructor
+@AllArgsConstructor
+public class ChapterExcelDTO implements Serializable {
+    private static final long serialVersionUID = 1L;
+
+    @ApiModelProperty(value = "创建人")
+    private String createBy;
+
+
+    @ApiModelProperty(value = "创建日期")
+    @JsonFormat(pattern = "yyyy/M/d HH:mm:ss")
+    private LocalDateTime createTime;
+
+    @ApiModelProperty(value = "更新人")
+    private String updateBy;
+
+    @ApiModelProperty(value = "更新日期")
+    @JsonFormat(pattern = "yyyy/M/d HH-mm-ss")
+    private LocalDateTime updateTime;
+
+    @ApiModelProperty(value = "所属部门")
+    private String sysOrgCode;
+
+    @ApiModelProperty(value = "序号")
+    private Double orderNum;
+
+    @ApiModelProperty(value = "章节名称")
+    private String name;
+
+    @ApiModelProperty(value = "简介")
+    private String content;
+
+    @ApiModelProperty(value = "父章节")
+    private Long pid;
+
+    @ApiModelProperty(value = "课程id")
+    private String courseId;
+
+    @ApiModelProperty(value = "课程目标")
+    private String courseObjectivesId;
+
+    @ApiModelProperty(value = "总学时")
+    private double totalClassHours;
+
+    @ApiModelProperty(value = "要求")
+    private String requirement;
+
+    @TableField(exist = false)
+    @ApiModelProperty(value = "是否是节")
+    private boolean isSection;
+
+
+    @TableField(exist = false)
+    @ApiModelProperty(value = "章内序号")
+    private Integer internalOrder;
+
+    @ApiModelProperty(value = "线上学时")
+    private String onlineClassHours;
+
+    @ApiModelProperty(value = "周次")
+    private String zc;
+
+
+    @ApiModelProperty(value = "内部序号显示")
+    private String numshow;
+
+    @ApiModelProperty(value = "excel上级序号")
+    @TableField(exist = false)
+    private Long ParentExcelId;
+
+    @ApiModelProperty(value = "excel序号")
+    @TableField(exist = false)
+    private Long ExcelId;
+
+    public void setIsSection(boolean b) {
+        this.isSection=b;
+    }
+}

src/main/java/com/teaching/backend/model/entity/chapter/TemporaryChapter.java

@@ -69,7 +69,7 @@ public class TemporaryChapter implements Serializable {
     private String courseObjectivesId;
 
     @ApiModelProperty(value = "总学时")
-    private String totalClassHours;
+    private double totalClassHours;
 
     @ApiModelProperty(value = "要求")
     private String requirement;

src/main/java/com/teaching/backend/service/chapter/IChapterService.java

@@ -4,12 +4,12 @@ package com.teaching.backend.service.chapter;
 import com.baomidou.mybatisplus.extension.plugins.pagination.Page;
 import com.baomidou.mybatisplus.extension.service.IService;
 import com.teaching.backend.model.dto.chapter.ChapterDTO;
+import com.teaching.backend.model.dto.chapter.ChapterExcelDTO;
 import com.teaching.backend.model.entity.chapter.Chapter;
 import com.teaching.backend.model.vo.chapter.ChapterVo;
 
 import javax.servlet.http.HttpServletResponse;
 import java.io.IOException;
-import java.io.UnsupportedEncodingException;
 import java.util.LinkedList;
 import java.util.List;
 
@@ -54,7 +54,7 @@ public interface IChapterService extends IService<Chapter> {
 
     void moveDataFromTemporaryToFinal();
 
-    Long saveToTemporaryTable(ChapterDTO chapterDTO);
+    Long saveToTemporaryTable(ChapterExcelDTO chapterDTO);
 
     void downExcel(HttpServletResponse response) throws IOException;
 

src/main/java/com/teaching/backend/service/impl/chapter/ChapterServiceImpl.java

@@ -14,12 +14,12 @@ import com.teaching.backend.mapper.chapter.ChapterMapper;
 import com.teaching.backend.mapper.chapter.TemporaryChapterMapper;
 import com.teaching.backend.model.dto.chapter.ChapterDTO;
 
+import com.teaching.backend.model.dto.chapter.ChapterExcelDTO;
 import com.teaching.backend.model.entity.chapter.Chapter;
 import com.teaching.backend.model.entity.chapter.TemporaryChapter;
 import com.teaching.backend.model.entity.knowtmp.Knowtmp;
 import com.teaching.backend.model.vo.chapter.ChapterVo;
 
-import com.teaching.backend.service.Know.KnowService;
 import com.teaching.backend.service.chapter.IChapterService;
 import com.teaching.backend.utils.Chapter.ExcelUtils;
 import org.springframework.beans.BeanUtils;
@@ -29,7 +29,6 @@ import org.springframework.transaction.annotation.Transactional;
 
 import javax.servlet.http.HttpServletResponse;
 import java.io.IOException;
-import java.math.BigDecimal;
 import java.time.LocalDateTime;
 import java.util.*;
 import java.util.stream.Collectors;
@@ -517,7 +516,7 @@ public class ChapterServiceImpl extends ServiceImpl<ChapterMapper, Chapter> impl
     @Transactional(rollbackFor = Exception.class)
 
     @Override
-    public Long saveToTemporaryTable(ChapterDTO chapterDTO) {
+    public Long saveToTemporaryTable(ChapterExcelDTO chapterDTO) {
         TemporaryChapter temporaryChapter = new TemporaryChapter();
         try {
             BeanUtils.copyProperties(chapterDTO, temporaryChapter);
@@ -526,10 +525,13 @@ public class ChapterServiceImpl extends ServiceImpl<ChapterMapper, Chapter> impl
         }
 
         Long pid = temporaryChapter.getPid();
+        //pid=0的时候
         if (pid == null || pid == 0) {
             temporaryChapter.setPid(0L);
             setChapterOrder(temporaryChapter, 0L);
-        } else {
+        }
+        //pid!=0的时候
+        else {
             TemporaryChapter parentChapter = temporaryChapterMapper.selectById(pid);
             if (parentChapter != null) {
                 temporaryChapter.setPid(parentChapter.getId());
@@ -538,8 +540,9 @@ public class ChapterServiceImpl extends ServiceImpl<ChapterMapper, Chapter> impl
                 throw new BusinessException(ErrorCode.PARAMS_ERROR, "未找到父章节，ID 为: " + pid);
             }
         }
-
+//        执行
         temporaryChapterMapper.insert(temporaryChapter);
+
         return temporaryChapter.getId();
 
     }

src/main/java/com/teaching/backend/utils/Chapter/ExcelParser.java

@@ -13,10 +13,13 @@ package com.teaching.backend.utils.Chapter;
 import com.teaching.backend.mapper.chapter.TemporaryChapterMapper;
 import com.teaching.backend.service.chapter.IChapterService;
 import org.apache.poi.openxml4j.opc.OPCPackage;
+import org.apache.poi.ss.usermodel.Sheet;
+import org.apache.poi.ss.usermodel.Workbook;
 import org.apache.poi.xssf.eventusermodel.XSSFReader;
 import org.apache.poi.xssf.eventusermodel.XSSFSheetXMLHandler;
 import org.apache.poi.xssf.model.SharedStringsTable;
 import org.apache.poi.xssf.model.StylesTable;
+import org.apache.poi.xssf.usermodel.XSSFWorkbook;
 import org.springframework.beans.factory.annotation.Autowired;
 import org.springframework.stereotype.Component;
 import org.xml.sax.InputSource;
@@ -40,20 +43,35 @@ public class ExcelParser {
     public List<String> parse(InputStream inputStream, String courseId) throws Exception {
         OPCPackage pkg = OPCPackage.open(inputStream);
         List<String> validationErrors = new ArrayList<>();
+        int totalRows = 0;
         try {
             XSSFReader reader = new XSSFReader(pkg);
             SharedStringsTable sst = reader.getSharedStringsTable();
             StylesTable styles = reader.getStylesTable();
             XMLReader parser = XMLReaderFactory.createXMLReader();
 
-            SheetHandler sheetHandler = new SheetHandler(temporaryChapterMapper, chapterService, courseId);
-            parser.setContentHandler(new XSSFSheetXMLHandler(styles, sst, sheetHandler, false));
-
             XSSFReader.SheetIterator sheets = (XSSFReader.SheetIterator) reader.getSheetsData();
+            SheetPreScanner preScanner = new SheetPreScanner();
             while (sheets.hasNext()) {
                 InputStream sheetstream = sheets.next();
                 InputSource sheetSource = new InputSource(sheetstream);
                 try {
+                    parser.setContentHandler(new XSSFSheetXMLHandler(styles, sst, preScanner, false));
+                    parser.parse(sheetSource);
+                } finally {
+                    sheetstream.close();
+                }
+            }
+            totalRows = preScanner.getRowCount();
+
+            sheets = (XSSFReader.SheetIterator) reader.getSheetsData();
+            SheetHandler sheetHandler = null;
+            while (sheets.hasNext()) {
+                InputStream sheetstream = sheets.next();
+                InputSource sheetSource = new InputSource(sheetstream);
+                try {
+                    sheetHandler = new SheetHandler(temporaryChapterMapper, chapterService, courseId, totalRows);
+                    parser.setContentHandler(new XSSFSheetXMLHandler(styles, sst, sheetHandler, false));
                     parser.parse(sheetSource);
                 } finally {
                     sheetstream.close();

src/main/java/com/teaching/backend/utils/Chapter/SheetHandler.java

@@ -3,10 +3,17 @@ package com.teaching.backend.utils.Chapter;
 import com.teaching.backend.common.ErrorCode;
 import com.teaching.backend.exception.BusinessException;
 import com.teaching.backend.mapper.chapter.TemporaryChapterMapper;
-import com.teaching.backend.model.dto.chapter.ChapterDTO;
+import com.teaching.backend.model.dto.chapter.ChapterExcelDTO;
 import com.teaching.backend.service.chapter.IChapterService;
+
+import jdk.nashorn.internal.ir.IfNode;
+import org.apache.poi.ss.util.CellRangeAddress;
+import org.apache.poi.ss.util.CellReference;
 import org.apache.poi.xssf.eventusermodel.XSSFSheetXMLHandler;
+
 import org.apache.poi.xssf.usermodel.XSSFComment;
+
+import org.apache.poi.xssf.usermodel.XSSFSheet;
 import org.springframework.transaction.annotation.Transactional;
 
 import java.util.*;
@@ -23,127 +30,139 @@ import java.util.*;
 
 public class SheetHandler implements XSSFSheetXMLHandler.SheetContentsHandler {
 
-
+    private Long currentChapterPid;
     private final TemporaryChapterMapper temporaryChapterMapper;
-
+    private Double chapterHour;
     private final IChapterService chapterService;
     private final String courseId;
-    private ChapterDTO chapterDTO;
+    private ChapterExcelDTO chapterDTO;
     private Map<Long, Long> excelIdToDatabaseIdMap = new HashMap<>();
     private List<String> validationErrors = new ArrayList<>();
     private boolean hasErrors = false;
-    private List<ChapterDTO> collectedChapters = new ArrayList<>();
+    private int totalRows;
 
-    public SheetHandler(TemporaryChapterMapper temporaryChapterMapper, IChapterService chapterService, String courseId) {
+
+
+    public SheetHandler(TemporaryChapterMapper temporaryChapterMapper, IChapterService chapterService, String courseId,int totalRows) {
         this.temporaryChapterMapper = temporaryChapterMapper;
         this.chapterService = chapterService;
         this.courseId = courseId;
+        this.totalRows=totalRows;
     }
 
     @Override
     public void startRow(int rowIndex) {
-        if (rowIndex == 0) {
+        if (rowIndex < totalRows - 1) {
+            if (rowIndex == 0 || rowIndex == 1) {
                 chapterDTO = null;
             } else {
-            chapterDTO = new ChapterDTO();
+                chapterDTO = new ChapterExcelDTO();
                 chapterDTO.setCourseId(courseId);
             }
+        } else {
+            chapterDTO = null;
         }
 
-    @Override
-    public void endRow(int rowIndex) {
-        if (rowIndex != 0 && chapterDTO != null) {
-            List<String> errors = validateChapter(chapterDTO);
-            if (!errors.isEmpty()) {
-                validationErrors.addAll(errors);
-                hasErrors = true;
-                return;
     }
 
-            collectedChapters.add(chapterDTO);
-        }
-    }
     @Transactional(rollbackFor = Exception.class)
-
     public List<String> finalizeProcess() {
         if (hasErrors) {
             return validationErrors;
         }
 
-        for (ChapterDTO chapter : collectedChapters) {
-            if (chapter.getParentExcelId() == null || chapter.getParentExcelId() == 0) {
-                saveToTemporaryTable(chapter);
-            }
-        }
-
-
-            for (ChapterDTO chapter : collectedChapters) {
-                if (chapter.getParentExcelId() != null && chapter.getParentExcelId() != 0) {
-                    saveToTemporaryTable(chapter);
-                }
-            }
-
-
         chapterService.moveDataFromTemporaryToFinal();
         return Collections.emptyList();
     }
 
-
+    private void saveToTemporaryTable(ChapterExcelDTO chapterDTO) {
-   private void saveToTemporaryTable(ChapterDTO chapterDTO) {
         Long pid = chapterDTO.getParentExcelId();
         if (pid != null && pid != 0) {
-
             Long parentId = excelIdToDatabaseIdMap.get(pid);
             if (parentId != null) {
                 chapterDTO.setPid(parentId);
             } else {
-                temporaryChapterMapper.deleteAll();
                 throw new BusinessException(ErrorCode.PARAMS_ERROR, "未找到父章节，Excel ID 为: " + pid);
-
             }
         }
-
-
         Long savedChapterId = chapterService.saveToTemporaryTable(chapterDTO);
         excelIdToDatabaseIdMap.put(chapterDTO.getExcelId(), savedChapterId);
-    }
-
-
 
+    }
 
-    private List<String> validateChapter(ChapterDTO chapterDTO) {
+    private List<String> validateChapter(ChapterExcelDTO chapterDTO) {
         List<String> errors = new ArrayList<>();
-        if (chapterDTO.getName() == null || chapterDTO.getName().isEmpty()) {
+        return errors;
-            errors.add("编号："+chapterDTO.getExcelId()+"的章节名字不能为空");
     }
 
-        if (chapterDTO.getExcelId() == null || chapterDTO.getExcelId() <= 0) {
+    @Override
-            errors.add("编号不能小于0");
+    public void endRow(int rowIndex) {
+        if (rowIndex != 0 && chapterDTO != null) {
+            List<String> errors = validateChapter(chapterDTO);
+            if (!errors.isEmpty()) {
+                validationErrors.addAll(errors);
+                hasErrors = true;
+                return;
+            }
+
+            if (chapterDTO.isSection()) {
+                if (currentChapterPid != null) {
+                    chapterDTO.setTotalClassHours(chapterHour);
+                    chapterDTO.setPid(currentChapterPid);
+                    saveToTemporaryTable(chapterDTO);
+                } else {
+                    throw new BusinessException(ErrorCode.PARAMS_ERROR, "未找到父章节，Excel ID 为: " + chapterDTO.getExcelId());
                 }
-        if (chapterDTO.getParentExcelId() == null || chapterDTO.getParentExcelId() < 0) {
-            errors.add("编号："+chapterDTO.getExcelId()+"的上级编号不能小于0");
             }
-        if (chapterDTO.getParentExcelId().equals(chapterDTO.getExcelId())) {
-            errors.add("编号："+chapterDTO.getExcelId()+"的  上级编号不能等于其自身");
         }
-        return errors;
+
     }
 
     @Override
     public void cell(String cellReference, String formattedValue, XSSFComment comment) {
-        if (chapterDTO != null && formattedValue != null) {
+        if (chapterDTO != null) {
             String letter = cellReference.substring(0, 1);
+
             switch (letter) {
                 case "A":
                     chapterDTO.setExcelId(Long.valueOf(formattedValue));
                     break;
+
                 case "B":
                     chapterDTO.setName(formattedValue);
                     break;
+
                 case "C":
-                    chapterDTO.setParentExcelId(Long.valueOf(formattedValue));
+                    if (!chapterDTO.isSection()) {
+                        chapterDTO.setTotalClassHours(Double.parseDouble(formattedValue));
+                        saveToTemporaryTable(chapterDTO);
+                        currentChapterPid = excelIdToDatabaseIdMap.get(chapterDTO.getExcelId());
+                    }
+                    break;
+
+                case "D":
+                    chapterDTO.setOrderNum(Double.valueOf(formattedValue));
                     break;
+
+                case "E":
+                    if (!formattedValue.isEmpty()) {
+                        chapterDTO.setName(formattedValue);
+                        chapterDTO.setIsSection(true);
                     }
+                    break;
+
+                case "F":
+                    if (chapterDTO.isSection()) {
+                        chapterDTO.setTotalClassHours(Double.parseDouble(formattedValue));
+                        chapterHour = chapterDTO.getTotalClassHours();
                     }
+                    break;
+
+            }
+
         }
+
+
+    }
+
 }

src/main/java/com/teaching/backend/utils/Chapter/SheetPreScanner.java

@@ -0,0 +1,34 @@
+package com.teaching.backend.utils.Chapter;
+
+import org.apache.poi.xssf.eventusermodel.XSSFSheetXMLHandler;
+import org.apache.poi.xssf.usermodel.XSSFComment;
+
+/**
+ * ClassName: Sheet
+ * Package: com.teaching.backend.utils.Chapter
+ * Description:
+ *
+ * @Author 姜钧瀚
+ * @Create 2024/8/11 18:04
+ * @Version 1.0
+ */
+public class SheetPreScanner implements XSSFSheetXMLHandler.SheetContentsHandler {
+    private int rowCount = 0;
+
+    @Override
+    public void startRow(int rowNum) {
+        rowCount++;
+    }
+
+    @Override
+    public void endRow(int rowNum) {
+    }
+
+    @Override
+    public void cell(String cellReference, String formattedValue, XSSFComment comment) {
+    }
+
+    public int getRowCount() {
+        return rowCount;
+    }
+}